| 2018-02-16 | ATRA | EVP & Chief Financial Officer | Sale+OE | 13,000 | $47.07 | $611,925.00 | -4.3% | → |
| 2018-01-12 | ATRA | EVP & Chief Financial Officer | Sale+OE | 37,000 | $24.35 | $900,815.00 | -10.9% | → |
| 2017-12-29 | ATRA | EVP & Chief Financial Officer | Sell | 32,000 | $20.00 | $640,000.00 | -24.9% | → |
| 2017-08-16 | ATRA | EVP & Chief Financial Officer | Sale+OE | 4,200 | $14.31 | $60,102.00 | -1.7% | → |
| 2017-05-16 | ATRA | EVP & Chief Financial Officer | Sale+OE | 4,000 | $15.11 | $60,440.00 | -1.7% | → |
| 2017-03-23 | ATRA | EVP & Chief Financial Officer | Sell | 14,000 | $20.65 | $289,045.00 | -5.7% | → |
| 2017-03-10 | ATRA | EVP & Chief Financial Officer | Sell | 24,000 | $20.00 | $480,000.00 | -15.9% | → |
| 2017-02-21 | ATRA | EVP & Chief Financial Officer | Sell | 9,000 | $15.14 | $136,260.00 | -5.6% | → |
| 2016-11-11 | ATRA | Chief Financial Officer | Sell | 5,000 | $19.84 | $99,175.00 | -2.7% | → |
| 2016-10-12 | ATRA | Chief Financial Officer | Sell | 5,000 | $17.47 | $87,325.00 | -2.5% | → |
| 2016-05-16 | ATRA | Chief Financial Officer | Sale+OE | 5,395 | $15.77 | $85,079.15 | -5.7% | → |
| 2016-02-16 | ATRA | Chief Financial Officer | Sale+OE | 6,000 | $15.49 | $92,940.00 | -6.7% | → |
| 2015-11-30 | ATRA | Chief Financial Officer | Sell | 6,000 | $40.00 | $240,000.00 | -14.2% | → |
| 2015-08-18 | ATRA | Chief Financial Officer | Sale+OE | 6,000 | $49.38 | $296,280.00 | -15.9% | → |
| 2015-06-15 | ATRA | Chief Financial Officer | Sell | 10,000 | $50.00 | $500,000.00 | -26.8% | → |
| 2015-05-29 | ATRA | Chief Financial Officer | Sell | 10,000 | $40.00 | $400,000.00 | -21.1% | → |